Image formation apparatus and image formation method

Details Image formation apparatus and image formation method Image formation apparatus and image formation method

2011-03-01

2011-03-01

Porta, David P (Department: 2884)

Electrophotography

Cleaning of imaging surface

Retractable cleaning arrangement

C399S121000, C399S308000, C399S351000

Reexamination Certificate

active

07899381

ABSTRACT:
An image formation apparatus includes a roller member that contacts a developer retaining member at a position and is distanced from the developer retaining member at another position. A contact edge of a cleaning blade supported by a supporting member is in contact with the roller member. A first plane of the cleaning blade that is supported by the supporting member, or is opposite to a surface that is supported by the supporting member, and a second plane of the cleaning blade form the contact edge. An angle θ1formed by a virtual vertical plane and the second plane thereunder when the roller member is distanced from the developer retaining member is greater than zero degrees but not greater than ninety degrees.

REFERENCES:
patent: 6335098 (2002-01-01), Kutzner et al.
patent: 6449453 (2002-09-01), Motohashi
patent: 2002/0034405 (2002-03-01), Kayahara et al.
patent: 2001-166611 (2001-06-01), None

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